DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Texas Instruments TI-1796SV
| Date of introduction: | 1999 | Display technology: | LCD |
| New price: | Display size: | 10 | |
| Size: | 5.2" x 4.3"
x 0.95" 132 x 109 x 24 mm3 |
||
| Weight: | 3.2 ounces, 92 grams | Serial No: | |
| Batteries: | LR54 (30µA) | Date of manufacture: | mth 02 year 1999 |
| AC-Adapter: | Origin of manufacture: | China (G) | |
| Precision: | 10 | Integrated circuits: | Sharp LI31692R |
| Memories: | 1 | ||
| Program steps: | Courtesy of: | Joerg Woerner |
This
TI-1796SV looks great - you won't find any right angle in the design. Curious
about the SV designation? It is the abbreviation of SuperViewTM which
implies the perfect size and contrast of the LC-Display. Compare it with its
predecessor TI-1796+.
Dismantling this TI-1796SV manufactured in
February 1999 by Kinpo
Electronics in China reveals a clean design centered around a Sharp LI31692R
single-chip calculator circuit in a conventional Quad Flat Pack (QFP) housing
and soldered on a double-sided printed circuit board
(PCB). The electronics is powered by 4 small solar cells and a LR54 (LR1130)
backup battery.
Inspecting
the PCBs of the TI-1796SV calculators brought our attention to
two small marks reading
796T-10-2. We spotted a very similar PCB-Mark already
with a TI-5018SV and started compiling a list of the PCB-Marks on calculators
manufactured by OEMs for Texas Instruments.
Don't miss the TI-1795SV and its twin
TI-7350SV with only 8 digits display in an identical housing.
A similar shaped housing was used with the €-1796
introduced
in the same year. Don't miss the rare prototype of
the €-1796.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, May 2, 2003. No reprints without written permission.